F-110AThe original US Air Force designation for the F-4C. It supported a wide spectrum of weapons including AIM-4 Falcon, AGM-12 Bullpup, and nuclear weapons; wider main wheel tires resulted in distinctive wing bulges; J79-GE-15 engines with provision for cartridge start; boom refuelinginstead of Navy’s probe and drogue refueling; AN/APQ-100 radar; duplicated flight controls in the rear cockpit. The aircraft exceeded Mach 2 during its first flight on 27 May 1963; 583 built.